The Gap is one of the original and best known of the sandstone climbing areas in South Wales, although nowadays others have overtaken it in popularity. Sitting high on a hill overlooking the A470 Cardiff to Merthyr Tydfil road, it has a nice open aspect and plenty of routes at all grades that are well equipped. The majority of the routes are wall climbs, with the hardest featuring sustained sequences on thin edges. There are plenty of routes in the lower 6s including a few smart crack-lines.